Cat and Mouse — William Campbell Gault

To hit Brock where it hurts the most, a vengeful stranger targets the people he loves It starts with the dead cat. Ex-private investigator Brock Callahan finds the Siamese by his mailbox, its throat cut, and assumes it is a message from some crook he put away long ago. Soon a letter arrivesThe cat was first. Who is second?and Brock knows the threat is no joke. He hires his protg, the ambitious young detective Corey Raleigh, to help him guard his wife and housekeeper, but Corey has troubles of his own. The kid detective is about to get an inside look at the workings of criminal justice. The cops find Corey not far from Brock's househalf-conscious with a gun in his hand and a dead man at his feet. It's an obvious frame-up, but to clear Corey's name Brock will have to find the real killer, and lock him away before his wife meets the same fate as the unfortunate Siamese. Cat and Mouse is the 13th book in the Brock Callahan Mysteries, but you may enjoy reading the series in any order.